FRISCO (CBSDFW.COM) — A Frisco father who lost his son because of a designer drug is taking his fight against drugs all the way to Washington, D.C.

Eric Brown is devastated over the loss of his 15-year old son, Montana Sean Brown. Brown says his son died from a designer hallucinogen drug that is similar to LSD.

According to Brown, his son — along with his 20- and 16-year-old brothers and a family friend — tried to get hallucinogenic mushrooms while the parents were out of town. When they failed, they procured marijuana and a drug believed to be LSD.